How much energy is required to heat a 25g sample of ice at temperature of -15 °C to steam at a

Q: Explain the difference between random error and systematic error

A: Observational error or measurement error is the difference between the measured value and the actual...

Q: 5.23 Consider this reaction: What is the value of ΔH if (a) the equation is multiplied throughout by...

A: Given: The reaction given is, 2CH3OH(l) + 3O2(g) → 4H2O(l) + 2CO2(g)       ∆H = -1452.8 kJ/mol For t...

Q: Twenty-five milliliters of liquid nitrogen (density = 0.807 g/mL) is poured into a cylindrical conta...

A: Given: The volume of liquid nitrogen poured in the cylinder is VN2 = 25 ml Density = 0.807 g/mL The ...

Q: The indicator-dilution method is a technique used to determine flow rates of fluids in channels for ...

A: Given:   Gas stream contains 1.5 mole % CO2,  20 kg CO2 injected into line Gas sample withdrawn at ...

Q: 5.96 Calculate the standard enthalpy of formation for diamond, given that C(graphite) + O2(g) CO2(g)...

A: Reaction given in question C (graphite) +O2 (g) →CO2 (g)       ∆H°= -393.5 kJ/mol          C (diamon...

Q: A tire having a volume of 2.5 ft contains air at a gauge pressure of 30psi and a temperature of 70°F...

A: GivenVolume of tire, V=2.5 ft3pressure,P=30 psitemperature, T=70oFIdeal gas constant ,R=1716 ft-lb/s...

Q: The specific gravity of mercury at 80°C is 13.4. Assume the density of water at 4°C is 1.94 slugs/ft...

A:

Q: Write a short note on the catalyst in selective catalytic reduction (SCR) technique?

A: The note on the catalyst in the selective catalytic reduction technique is to be mentioned.

Q: The stack gas exits at an average velocity of 20 m/s, and the stack has an inside diameter of 5 mete...

A: The stack gas was sampled usiing ETA method. Intitial condition of the gas is given as, Temperature,...

Q: One mole of an ideal gas, Cv = 20.0.2 J/Kmol, initially at 15°C and 2.0 bar undergoes two steps tran...

A: Given: One mole of an ideal gas has a heat capacity at constant volume given as, Cv = 20 J/mol.K    ...

Q: A 5-cm-external-diameter, 10-m-long hot water pipe at 80°C is losing heat to the surrounding air at ...

A: Given Data: DIameter of pipe (D) = 0.05 m Length of the pipe (l)=10 m Therefore , Area of the pipe s...

Q: A bomb calorimeter has a heat capacity of 2.47 kJ/°C. When a 0.105g of ethylene ( C„H¾) is burned in...

A: Note: We are authorized to answer one question at a time, since you have not mentioned which questio...

Q: Ethane at 25°C and 1.1 atm (abs) flowing at a rate of 100 mol/s is burned with 20% excess oxygen at ...

A: Given:  Ethane at 25 °C and 1.1 atm, flow rate is 100 mol/s 20 % excess O2 at 175 °C and 1.1 atm Com...

Q: Which of the following is one of the raw materials used for biodiesel production?

A: This question is based on biodiesel production. We have three options and we will analyze the option...

Q: ENGINEERING ECONOMY - DRAW A CASH FLOW DIAGRAM The Department of Traffic Security of a city is con...

A: Present value= $1,000,000 Interest rate=10% n =5 years Find Equivalent value today

Q: The seven most abundant ions in seawater make up more than 99% by mass of the dissolved compounds. H...

A: Ions in sea water have mass Chloride =18,980mg; Sodium =10,560mg Sulphate =2650mg Magnesium =1270mg...

Q: A feed stream in an oil refinery contains 12 wt.% pentane (C5H12) and 40 wt. 94 hexane (C6H14), with...

A: Let, Pentane = ‘1’, Hexane = ‘2’, and Heptane = ‘3’ The basis of the calculation is taken as 100 g f...

Q: 4.97. The analysis of a coal indicates 75 wt% C, 17% H, 2% S, and the balance noncombustible ash. Th...

A: Excess air is the practical amount of air that is supplied to the combustion chamber to ensure that,...

Q: The following data were collected for the reaction, A --> products time, min [A], M 0.3 0.091 1 0.07...

A: given  data: time, t (min) [A] 0.3 0.091 1 0.077 2 0.032 3 0.021 4 0.015 5 0.012 6 ...

Q: Benzoic acid of mass 1.40 g is reacted with oxygen in a constant volume calorimeter to form H2O(l) a...

A: Benzoic acid reacts with oxygen in constant volume calorimeter to form water and carbon dioxide. Con...

Q: Calculate or find:Concentration of the soluble gas in the effluent liquid if the column is operated ...

A: Given data: Mass flow rate of pure water = 1000 lbm/h Entering gas flow rate = 800 lbm/h Equilibrium...

Q: Solve the problem as neatly as possible and show complete solution. Round everything to four decimal...

A: (a) Compound burned- C6H6 The percentage of excess air is 40%. The basis of the calculation is taken...

Q: What are recuperators in afterburner ?

A: A burner is a device that uses gaseous fuel such as natural gas, propane, acetylene along with an ox...

Q: A and B are ideal gases. na moles of A and nb moles of B are mixed adiabatically at some constant T ...

A: An adiabatic process is a type of thermodynamic process that occurs without transferring heat or mas...

Q: Use the given molar solubilities in pure water to calculate K, for each compound. a. BaCro, molar so...

A: Given: a) BaCrO4, molar solubility is 1.08×10-5M b) Ag2SO3, molar solubility is 1.55×10-5M c) Pd(SCN...

Q: Atlas Long-Haul Transportation is considering installing Valutemp temperature loggers in all of its ...

A: Given: The cash flow diagram according to the given information is, It implies, that at the end of ...

Q: - The SO, scrubbing tower described in Problem 4.36 is to bc used to reducc the SO, mole fraction in...

A: SO2 scrubbing is done in industry where power generation takes place, where SO2 is produced as a byp...

Q: What Is The General Balance Equation?

A: Energy is defined as the ability or capacity to do work. There are various forms of energy, for inst...

Q: One hundred kmol/h of liquid alcohols containing, by moles, 40% methanol (M), 35% ethanol (E), 15% i...

A: By figure (Given) Find The flow rates in kmol/h of each component in form of a table Purity of the...

Q: Which of the following is considered one of the most important parameters of biomass quality?

A: Introduction Biogas is an energy-rich gas produced by anaerobic decomposition or thermochemical conv...

Q: A student performed an experiment to determine the ratio of H;O to CuSO, in a sample of hydrated cop...

A: Given: Formula obtained experimentally is CuSO4·4.5H2O True formula is CuSO4.5H2O Error for differen...

Q: One thousand kilograms per hour of a mixture containing equal parts by mass of methanol and water is...

A: Given that: Feed of mass flow rate= 1000 kg/h Mass of methanol = mass of water Hence, mass fraction ...

Q: Calculate the final temperature of the exhaust formed when 1.00 Ibm/min of methane at 70 oF is combu...

A: Steady sate enthalpy condition is for closed system. The balance will be the heat flow of system is ...

Q: Which sample contains more moles: 2.0 L of O 2 at 273 K and 500. mm Hg, or 1.5 L of N 2 at 298 K and...

A: Given: We have two samples, O2 and N2 at different conditions, For O2: V = 2 L = 0.002 m3 T = 273 K ...

Q: A solution of 6 % acetaldehyde in toluene is to be extracted with water in a 4 stage cross current u...

A: Let us consider A: Toluene,    B: Water,     C: Acetaldehyde Feed F = 125 kg The weight fraction of ...

Q: Whenever a gas expands isothermally, such as whenyou exhale or when a flask is opened, the gas under...

A: Given that: Mass of methane gas= 15 g, molar mass= 16 g/mol Temperature, T = 260 K Initial Pressure,...

Q: Which polymer property/properties affect the crystallinity degree of a polymer? I. Molecular weight ...

A:

Q: Define the terms bond enthalpy and mean bond enthalpy. Use examples to illustrate the difference bet...

A: The definition of the bond enthalpy and mean bond enthalpy are to be mentioned along with examples.

Q: cash flow diagram

A: Cash Flow is the net amount of cash and its equivalents being transferred from or into a project. Th...

Q: A student performed an experiment to determine the hydrated copper (II) sulfate by heating it to dri...

A: Introduction A  salt with associated water of crystallization is known as a hydrate  Water of crysta...

Q: Why is sulfur an undesirable impurity in a fuel?

A: Reason-In fuel sulphur is considered as undesirable impurity.

Q: An adult inhales approximately 12 times per minute, taking in about 500 mL of air with each inhalati...

A: The relative humidity is the ratio of moisture in the air. This will be lower in aero plane because ...

Q: How is compressed gas released?

A: The compressed gases are hazardous while handling as the are stored under containers in very high pr...

Q: A 1200 L vessel contains 85 gmol of nitrogen. The vessel can withstand 25 kPa above atmospheric pres...

A: Given, Volume of Vessel V = 1200 L = 1200 × 10-3  m3 Mass of Nitrogen m = 85 gmol Maximum Pressure o...

Q: Explain Humid volume?

A: The term humid volume is to be explained.

Q: Find ΔH, ΔE, q, and w for the freezing of water at -10.0 °C. The specific heat capacity of ice is 2....

A: Given: The specific heat capacity of ice is Cpice = 2.04 J/g.oC  The heat of fusion of ice is ∆Hfus ...

Q: Prism gas permeation

A: Prism gas permeation process or separation by gas permeation is a membrane-based system. Fluids or v...

Q: Liquid methyl ethyl ketone (MEK) is introduced into a vessel containing air. The system temperature ...

A: Given: Liquid methyl ethyl ketone (MEK) is introduced into a vessel containing air The system temper...

Q: Which of the followings is/are true for polymers? I. Linear polymers: The polymers have linear chain...

A:

Q: 8.68. A mixture that contains 46 wt% acetone (CH;COCH3), 27% acetic acid (CH;COOH), and 27% acetic a...

A: Note: Since we are entitled to answer only 3 sub-parts, we’ll answer the first 3. Please resubmit ot...